It is not recommended to use balloons to create a fake pregnant belly, as balloons can pose a choking hazard if they are inhaled or ingested. Additionally, balloons can pop or deflate unexpectedly, which could lead to injury.
If you are looking to create the appearance of a fake pregnancy belly, it is safer to use other methods such as padding, layers of clothing, or specialized prosthetics designed for this purpose. These options can help you create the desired appearance without posing any risk to your safety.